Bug#853513: libvigraimpex: ftbfs with GCC-7

[Andreas Metzler]

On 2017-01-31 Matthias Klose <doko at debian.org> wrote:
> Package: src:libvigraimpex
> Version: 1.10.0+git20160211.167be93+dfsg-2
> Severity: normal
> Tags: sid buster
> User: debian-gcc at lists.debian.org
> Usertags: ftbfs-gcc-7

> Please keep this issue open in the bug tracker for the package it
> was filed for.  If a fix in another package is required, please
> file a bug for the other package (or clone), and add a block in this
> package. Please keep the issue open until the package can be built in
> a follow-up test rebuild.

> The package fails to build in a test rebuild on at least amd64 with
> gcc-7/g++-7, but succeeds to build with gcc-6/g++-6. The
> severity of this report may be raised before the buster release.
> There is no need to fix this issue in time for the stretch release.
[...]

The latest upstream version /builds/ successfully with gcc7, however the
testsuite still fails:

-------------------------------------------------------------------------
[ 37%] Linking CXX executable test_blockwisewatersheds
cd /tmp/VIGRA/vigra-Version-1-11-1/obj/test/blockwisealgorithms && /usr/bin/cmake -E cmake_link_script CMakeFiles/test_blockwisewatersheds.dir/link.txt --verbose=1
/usr/lib/ccache/g++-7   -std=c++11 -pthread -W -Wall -Wextra -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -pipe -Wdate-time -D_FORTIFY_SOURCE=2   CMakeFiles/test_blockwisewatersheds.dir/test_watersheds.cxx.o CMakeFiles/test_blockwisewatersheds.dir/testsuccess.cxx.o  -o test_blockwisewatersheds -rdynamic 
Running test_blockwisewatersheds
cd /tmp/VIGRA/vigra-Version-1-11-1/obj/test/blockwisealgorithms && ./run_test_blockwisewatersheds.sh
Entering test suite blockwise watershed test

Failure in BlockwiseWatershedTest::fourDimensionalRandomTest()
Assertion failed: labeling not equivalent
array shape: (1, 1, 1, 1)
block shape: (2, 2, 2, 2)
neighborhood: 0
data:
1 
expected labels:
1 
got
1 
 (/tmp/VIGRA/vigra-Version-1-11-1/test/blockwisealgorithms/test_watersheds.cxx:168)

1 of 3 tests failed in test suite blockwise watershed test
Leaving test suite blockwise watershed test

test/blockwisealgorithms/CMakeFiles/test_blockwisewatersheds.dir/build.make:123: recipe for target 'test/blockwisealgorithms/test_blockwisewatersheds' failed
make[3]: *** [test/blockwisealgorithms/test_blockwisewatersheds] Error 1
-------------------------------------------------------------------------

cu Andreas
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